Haha no worries. The primary concern with any surgery really is to give your surgery site a chance to heal before you go bumping it around. I'd also be a bit more concerned about being a bit more sensitive to UV, lights and so on and so forth right after surgery. But really, I'd say to listen to your body and just be careful with making sure you don't crash into things. Duh.
Yeah I remember after the first surgery (which I did in April a few years ago in Ontario, to coincide with the gap between snowboarding season and wakeboarding season)... I was most sensitive to staring at a computer screen, and extremely bright days.
I'll make sure not to run headfirst into a tree!!!